METHOD FOR PRODUCING AQUEOUS ORTHO-PHTHALALDEHYDE SOLUTION

摘要

PROBLEM TO BE SOLVED: To provide a method for producing an aqueous ortho-phthalaldehyde (OPA) solution. SOLUTION: The method for producing the aqueous ortho-phthalaldehyde (OPA) solution comprises putting acetal of OPA into water and then adding an acid thereto to keep pH value to <7 and changing the acetal to OPA by adequate separation of alcohol. OPA acetal is used in order to produce the solution. COPYRIGHT: (C)2006,JPO&NCIPI